Few are the issues that I am facing on IOS Version 15 and Cisco 1941 Router , this router is currently in production on clients.
•1. I do PAT on router interface , and it has public IP on it , when I send request to Internet via Browser from LAN client , Page does not open and when I check NAT TRANSLATION on router , Router does translate the packets. The work around I found is that when I disabled CEF on router , Web starts browsing , Why does this happen and why I need to disable CEF ?
•2. I have Public IP Pool its subnet mask is /29 , one of the Public IP from this pool is live on the interface. When I perform STATIC NAT a web server resides in LAN , then I can access this server from anywhere in the world by IP.
After few days Static NAT stopped working , I again Static NAT it on other Public IP , the same issue rise again , I am not able to access this server from Internet. This issue has been faced at two clients. The same pool i have checked on 1841 router and static nat works fine on the same public IP .
I have upgraded the IOS as well to version 15.1 but STATIC NAT issue is not solved.
はじめに確認方法Version による Application name の変更について備考参考情報 はじめに本ドキュメントでは Cisco SD-WAN における Policy 上で設定可能な Application を確認する方法について記載しています。 確認方法サポートされている Application name についてはご使用されている vManage へ API を呼び出して確認することが可能です。https://<IP or FQDN>/...
DMVPN (Dynamic Multipoint VPN) Introduced by Cisco in late 2000 is a routing technology you can use to build a VPN network with multiple sites (spokes) without having to statically configure all devices. It’s a “hub and spoke” network, where the spok...
On 24th August 2021, Cisco announced the latest IOS XE release - Cisco IOS XE Bengaluru 17.6.1a
IOS XE 17.6.1a unlocks various routing features and enhancements comprehensively covering different technology segments such as voice, security,...
DMVPN (Dynamic Multipoint VPN) Introduced by Cisco in late 2000 is a routing technology you can use to build a VPN network with multiple sites (spokes) without having to statically configure all devices. It’s a “hub and spoke” network, where th...
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In the past when IOS 12.x was hot stuff we used MD5 to authenticate OSPF neighbors. This worked great on ethernet networks because OSPF is a m...